@cngvc

toeic-practice delivers daily rotating drills across parts 5-7 for intermediate learners targeting 700+. state tracking maintains rotation order, explanations emphasize grammar rules and vocabulary patterns, content is original and contextual.

ielts-practice delivers daily focused homework across listening, reading, and writing tasks following a five-part rotation cycle. targets band 6.0-6.5 learners with exam-accurate content, structured feedback against official descriptors, and state tracking to maintain session continuity.

business-english-coach targets vietnamese tech professionals with pattern-based workplace english instruction across slack, email, standups, code reviews, and meetings. teaches reusable phrases over grammar rules and corrects register, tone, and naturalness alongside grammar.

backend-interview-designer generates scenario-based senior backend interview questions across distributed systems, databases, caching, and reliability. includes templated variants for architecture scenarios, node.js-specific challenges, and theoretical deep-dives.

vietnam-fullstack-jobs aggregates fullstack developer listings from four vietnamese job boards (itviec, topdev, itjobs, topcv) via firecrawl web search. deduplicates results and formats output grouped by source with tech stack details.

english-writing-coach teaches writing across genres (email, essay, ielts, report) using a process-genre-feedback model. it guides learners through planning, drafting, and structured cqvg feedback, with difficulty scaling from a2 to c2.

english-reading-coach teaches seven core reading strategies (skimming, scanning, inference, prediction, main idea, intensive reading, gist) using real ESL texts in a structured ten-step session flow with explicit strategy modeling, comprehension tasks at three cognitive levels, and vocabulary-in-context drilling.

generates scenario-based interview questions for ai engineering roles across 16 topics and 4 seniority levels, with stated preference for trade-off and failure-mode probing over definitions.

db-internals-deep-dive covers storage engines, replication, and operational mechanics across postgresql, mongodb, redis, rabbitmq, and kafka. rotates through system topics on demand rather than following a fixed progression.

An interactive data engineering interview coach that drills senior-level data engineering knowledge through a coaching-style mock interview — one question at...

Interactive English listening and dictation practice using real ESL content, with personalized feedback, vocabulary teaching, and comprehension exercises.